scholarly journals Storing single photons emitted by a quantum memory on a highly excited Rydberg state

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Emanuele Distante ◽  
Pau Farrera ◽  
Auxiliadora Padrón-Brito ◽  
David Paredes-Barato ◽  
Georg Heinze ◽  
...  
Keyword(s):  
Rydberg State ◽  
Quantum Memory ◽  
Single Photons

scholarly journals High-bandwidth quantum memory protocol for storing single photons in rare-earth doped crystals

2013 ◽  
Vol 15 (9) ◽  
pp. 095012 ◽  
Author(s):  
Valentina Caprara Vivoli ◽  
Nicolas Sangouard ◽  
Mikael Afzelius ◽  
Nicolas Gisin
Keyword(s):  
Rare Earth ◽  
Quantum Memory ◽  
Single Photons ◽  
High Bandwidth ◽  
Rare Earth Doped

scholarly journals Simple Atomic Quantum Memory Suitable for Semiconductor Quantum Dot Single Photons

2017 ◽  
Vol 119 (6) ◽  
Author(s):  
Janik Wolters ◽  
Gianni Buser ◽  
Andrew Horsley ◽  
Lucas Béguin ◽  
Andreas Jöckel ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Quantum Memory ◽  
Single Photons ◽  
Semiconductor Quantum Dot

scholarly journals A hybrid quantum memory–enabled network at room temperature

2020 ◽  
Vol 6 (6) ◽  
pp. eaax1425
Author(s):  
Xiao-Ling Pang ◽  
Ai-Lin Yang ◽  
Jian-Peng Dou ◽  
Hang Li ◽  
Chao-Ni Zhang ◽  
...  
Keyword(s):  
High Speed ◽  
Information Technologies ◽  
Room Temperature ◽  
Schwarz Inequality ◽  
Quantum Memory ◽  
Atomic Ensemble ◽  
Single Photons ◽  
Long Distance ◽  
Atomic Excitations ◽  
A Chain

Quantum memory capable of storage and retrieval of flying photons on demand is crucial for developing quantum information technologies. However, the devices needed for long-distance links are different from those envisioned for local processing. We present the first hybrid quantum memory-enabled network by demonstrating the interconnection and simultaneous operation of two types of quantum memory: an atomic ensemble-based memory and an all-optical Loop memory. Interfacing the quantum memories at room temperature, we observe a well-preserved quantum correlation and a violation of Cauchy-Schwarz inequality. Furthermore, we demonstrate the creation and storage of a fully-operable heralded photon chain state that can achieve memory-built-in combining, swapping, splitting, tuning, and chopping single photons in a chain temporally. Such a quantum network allows atomic excitations to be generated, stored, and converted to broadband photons, which are then transferred to the next node, stored, and faithfully retrieved, all at high speed and in a programmable fashion.

scholarly journals EIT-based quantum memory for single photons from cavity-QED

2011 ◽  
Vol 103 (3) ◽  
pp. 579-589 ◽  
Author(s):  
M. Himsworth ◽  
P. Nisbet ◽  
J. Dilley ◽  
G. Langfahl-Klabes ◽  
A. Kuhn
Keyword(s):  
Cavity Qed ◽  
Quantum Memory ◽  
Single Photons

scholarly journals Frequency and bandwidth conversion of single photons in a room-temperature diamond quantum memory

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Kent A. G. Fisher ◽  
Duncan G. England ◽  
Jean-Philippe W. MacLean ◽  
Philip J. Bustard ◽  
Kevin J. Resch ◽  
...  
Keyword(s):  
Room Temperature ◽  
Quantum Memory ◽  
Single Photons

Two single-state semi-quantum secure direct communication protocols based on single photons

2020 ◽  
Vol 34 (11) ◽  
pp. 2050106 ◽  
Author(s):  
Zhenbang Rong ◽  
Daowen Qiu ◽  
Xiangfu Zou
Keyword(s):  
Quantum Secure Direct Communication ◽  
Quantum Memory ◽  
Single Photons ◽  
Secret Key ◽  
Direct Communication ◽  
Classical Counterpart ◽  
Resource Requirements ◽  
Preparation Phase ◽  
Single State ◽  
Quantum Protocol

Semi-quantum protocol is a hot topic in quantum cryptography. One of the original motivational reasons to study semi-quantum protocol is to better understand “how quantum” a protocol needs to be in order to gain an advantage over its classical counterpart. Semi-quantum secure direct communication (SQSDC) is an important branch of the semi-quantum protocol, which makes it possible to directly transfer large amounts of data between quantum participant and classical participant without need to share the secret key in advance. In this paper, we propose two new SQSDC protocols based on single photons to study how to reduce the quantum resource requirements of both quantum participant and classical participant. In both protocols, the classical participant requires neither quantum memory or quantum delay lines. We first propose in the first protocol that the quantum participant only need to prepare single-state qubits in the preparation phase, which is different from previous SQSDC protocols. Then we propose in the second protocol that quantum participant can accomplish the same work as the first one even without quantum memory. Efficiency analysis shows that the first protocol is more efficient than some protocol, and the second one can save more quantum resources at the expense of some efficiency. Compared with the existing SQSDC protocols based on single photons, both protocols can use fewer quantum states or quantum resource requirements than other protocols. Finally, we analyze the security of both protocols.

scholarly journals Storage and Retrieval of THz-Bandwidth Single Photons Using a Room-Temperature Diamond Quantum Memory

2015 ◽  
Vol 114 (5) ◽  
Author(s):  
Duncan G. England ◽  
Kent A. G. Fisher ◽  
Jean-Philippe W. MacLean ◽  
Philip J. Bustard ◽  
Rune Lausten ◽  
...  
Keyword(s):  
Room Temperature ◽  
Quantum Memory ◽  
Single Photons ◽  
Storage And Retrieval

scholarly journals Simple and efficient absorption filter for single photons from a cold atom quantum memory

2015 ◽  
Vol 23 (5) ◽  
pp. 6822 ◽  
Author(s):  
Daniel T. Stack ◽  
Patricia J. Lee ◽  
Qudsia Quraishi
Keyword(s):  
Cold Atom ◽  
Quantum Memory ◽  
Single Photons ◽  
Absorption Filter
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